Abstract
Two new cases of pulmonary infarction with the only electrocardiographic findings of QR or QS type ventricular premature beats in lead II, III and aVF are reported. A similar case was reported 3 years ago by authors. Authors believe that QR or QS type ventricular extrasystoles in lead II, III and aVF are diagnostic for the pulmonary embolism or pulmonary infarction if there are no signs of myocardial infarction.